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2,242 Articles
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The world's best gem articles, published weekly.

Most Recent Articles

Top Spots for Gem Hunting in the US

Visit one of the top gem hunting spots in the US. Go alone or with the family. A gemology-themed vacation can be fun, educational, and (maybe) profitable.

Ultraviolet Testing and Gemstone Identification

Ultraviolet testing can be crucial for gemstone identification. Learn the basics of this technique as well as how to make your own UV viewing box.

Augelite Value, Price, and Jewelry Information

Soft and brittle, rare augelites are difficult to cut and unsuitable for wear. Faceted transparent pieces are only found in very complete gem and mineral collections.

Gram Easy Emerald: Online Faceting Designs & Diagrams

Easy to cut, the Gram Easy Emerald by Jeff Graham will maximize gem yield. This design and its cutting sequence will also accommodate stones with arbitrary length to width ratios.

Jadeite Value, Price, and Jewelry Information

One of two distinct minerals commonly known as jade, jadeite is the rarer and harder variety. Rich emerald-green jadeite, known as “imperial jade,” is also the most highly valued. However, durable jadeite can be found in many colors and is well-suited for both intricate carvings and cabochons.

10 Rare Engagement Ring Stones that Won’t Break the Bank

Not all rare gemstones cost a fortune. If you’re looking for something different but affordable for your wedding, here are 10 rare engagement ring stones that will fit almost any budget.

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"Becoming a Pro Member of IGS just made good sense for my business. The gemology resources are fantastic, and my profile lets potential customers know I am serious about colored gemstones. And frankly, if I get any exposure to potential customers it's a no-brainer."
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Jeweler, IGS Pro Member

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Over 15 years, we have assembled detailed pricing and value information for appraising over 70 different gemstones. The values in our guide come from a variety of sources including primary and secondary gemstone dealers, jewelers, miners, and wholesale suppliers of commonly traded gemstones.

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